US20020148036A1 - Lavatory cleansing devices - Google Patents

Lavatory cleansing devices Download PDF

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Publication number
US20020148036A1
US20020148036A1 US10/073,539 US7353902A US2002148036A1 US 20020148036 A1 US20020148036 A1 US 20020148036A1 US 7353902 A US7353902 A US 7353902A US 2002148036 A1 US2002148036 A1 US 2002148036A1
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United States
Prior art keywords
liquid
container
toilet bowl
formulation
dispensing unit
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Abandoned
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US10/073,539
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English (en)
Inventor
Brian Wilson
Steve Balls
Paul Pleasance
Rachel Sobiechowski
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STEPADVICE Ltd
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Jeyes Group Ltd
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Filing date
Publication date
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Assigned to JEYES GROUP LIMITED reassignment JEYES GROUP LIMITED ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: SOBIECHOWSKI, RACHEL, BALLS, STEVE NICOL, PLEASANCE, PAUL, WILSON, BRIAN
Publication of US20020148036A1 publication Critical patent/US20020148036A1/en
Assigned to STEPADVICE LIMITED reassignment STEPADVICE LIMITED ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: JEYES GROUP LIMITED
Priority to US10/835,988 priority Critical patent/US7234175B2/en
Assigned to JEYES GROUP LIMITED reassignment JEYES GROUP LIMITED CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: STEPADVICE LIMITED
Abandoned legal-status Critical Current

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    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03D—WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
    • E03D9/00—Sanitary or other accessories for lavatories ; Devices for cleaning or disinfecting the toilet room or the toilet bowl; Devices for eliminating smells
    • E03D9/02—Devices adding a disinfecting, deodorising, or cleaning agent to the water while flushing
    • E03D9/03—Devices adding a disinfecting, deodorising, or cleaning agent to the water while flushing consisting of a separate container with an outlet through which the agent is introduced into the flushing water, e.g. by suction ; Devices for agents in direct contact with flushing water
    • E03D9/032—Devices connected to or dispensing into the bowl
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03D—WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
    • E03D9/00—Sanitary or other accessories for lavatories ; Devices for cleaning or disinfecting the toilet room or the toilet bowl; Devices for eliminating smells
    • E03D9/02—Devices adding a disinfecting, deodorising, or cleaning agent to the water while flushing
    • E03D2009/024—Devices adding a disinfecting, deodorising, or cleaning agent to the water while flushing using a solid substance

Definitions

  • This invention relates to lavatory cleansing devices for delivering fragrance and cleansing products to a lavatory bowl.
  • the invention is particularly concerned with devices delivering a liquid product such as a perfume, surfactant or disinfectant, particularly in the form of a solution, dispersion or suspension, together with a bleach, or other relatively aggressive product such as a limescale remover, and for delivering it to a toilet bowl under the action of water used to flush the toilet bowl.
  • EP-A-0 538 957 describes a device that can be mounted on the inner rim of a water closet bowl to dose a liquid freshening product into the flushing water.
  • the liquid product is dosed into the water flow from a porous substrate, forming a delivery plate which is disposed in the path of the flushing water.
  • the porous substrate is supplied with the liquid product from a container disposed above the substrate, a mouth at the bottom of the container has a liquid permeable plug which opens onto the upper surface of the substrate.
  • E-A-0 785 315 describes a development of the device discussed above.
  • the same basic principle of delivering a liquid product into a flow of water from a porous substrate is employed.
  • liquid product from the container is deposited onto the upper surface of the substrate via a regulating channel.
  • the liquid is metered into the channel through an orifice and a separate opening allowing air into the interior of the container is provided.
  • the sizes of the metering orifice and the air opening are related to the viscosity of the liquid being dosed.
  • WO 99/66139 and WO 99/66140 describe numerous variations of the liquid rim product, including different styles of delivery plate in place of the porous plate of EP-A-0 538 957, while WO 00/42261 describes a design which uses a grooved plate.
  • EP-A-775 741 describes a liquid formulation suitable for use in liquid rim products. This formulation comprises perfume, anionic or non-ionic surfactant, evaporation regulator and a solvent. EP-A-775 741 also mentions that a bleaching or disinfecting agent, such as hypochlorite, peroxide or isocyanurate can be incorporated in the liquid formulation but no actual formulation is described.
  • a bleaching or disinfecting agent such as hypochlorite, peroxide or isocyanurate
  • a problem with bleach formulations is that the bleach can have an adverse effect on other constituents in the formulation and on the delivery device itself, particularly where it is desirable to use a transparent container so that the user can see the color of the formulation, and can also see when the supply is nearly exhausted and a refill is required.
  • good quality perfumes are not compatible with bleaches.
  • PVC and PET are used for molding liquid rim devices, but high density polyethylene or polypropylene would be preferred materials for a bleach system.
  • One aspect of the present invention provides a lavatory cleansing device for use in a toilet bowl comprising a first container containing a first, liquid formulation and a second container containing a second formulation, and delivering means for automatically delivering the formulations under the action of flush water.
  • the delivery means comprises a delivery surface, the first formulation being delivered onto the delivery surface, and flush water of the toilet runs over the delivery surface to carry the first formulation into the water in the toilet bowl.
  • the first and second formulations are kept substantially separate by the delivery means and so do not come into contact until they have mixed with the flush water. In particular it is desired that the formulations do not come into substantial contact at the lavatory cleansing device in between flushes of the toilet bowl.
  • a wick may extend into a container containing the or a liquid formulation and the liquid formulation is drawn from the container by flush water running over the wick.
  • DE-A-3 419 169 describes such devices.
  • the second formulation may be an acidic formulation. Such formulations are intended, in particular, to reduce limescale formation and build up in the toilet bowl.
  • a delivery system using a textile surface can provide for a faster and better spread of a viscous liquid over a dosing area, as compared to a porous substrate or grooved plate of the prior art. Without wishing to be bound by theory, it is believed that the relatively fine surface structure of the textile surface may contribute to the improved spreading characteristics.
  • the viscous liquid is not absorbed, or not absorbed substantially into the textile and so it is washed off more readily by flushing water in a toilet bowl, or evaporates more readily to atmosphere to provide improved fragrance.
  • a hydrophobic textile is preferred.
  • Textile material is a material or fabric made from fibers, yarns or filaments (herein referred to generally as fibers).
  • the material may be non-woven, in which fibers are bonded, fused or interlocked, but a material made by interweaving, intertwining or interlooping (referred to generally herein as weaving or knitting) is preferred.
  • the material may be of quite dense structure when seen in plan, so as to present a substantially continuous surface, with few if any voids between adjacent fibers.
  • an open weave structure has also been found to work well. By virtue of the weaving or knitting process, the textile will have a textured or three dimensional surface.
  • the surface of the material may be compacted, that is with few fibers or fibrous elements projecting from the surface, and the surface texture having a low profile or height.
  • One textile material which may be used is a polyester knitted fabric such as used for net curtain material or heavier use such as filter material.
  • a liquid component can be delivered from a container directly onto the delivery surface or the upper surface of the fabric from above, for example using devices of the type seen in EP-A-538 957, WO 99/66139 and WO 00/42261. However it is particularly preferred to deliver the liquid from a cup located below the delivery surface or fabric.
  • a capillary system then delivers the liquid up on to the delivery surface or fabric surface.
  • the capillary may be a series of grooves or channels, a porous member, or a wick of cellulose, polyester or the like as used in air fresheners, for example.
  • a system for delivering liquid onto the upper surface of a delivery plate is described in co-pending application No. WO 01/32995. Such a system is suitable for use with the fabric or textile surface, which is described in more detail in co-pending application No GB 0026832.6.
  • the second formulation preferably a bleach or acid formulation
  • the second formulation is a solid and is housed adjacent the container for the non-bleach containing formulation.
  • the solid formulation may be a single block or tablet or several tablets, pellets, granules, etc.
  • the second formulation may also be a paste or gel.
  • the tablet(s), pellets, granules etc. are housed in a substantially enclosed space which has openings to allow flushing water to enter the space and wash out some of the components into the lavatory cistern, but will inhibit access by the user in normal use.
  • Pellets or granules may conveniently be held in a mesh bag.
  • flush water is held in contact with the solid formulation for a short period of time before passing into the toilet bowl. This ensures sufficient time to dissolve constituents of the formulation, and also that the solution is delivered at the end of the flushing cycle and so is not immediately carried out of the toilet bowl by the flushing water,
  • the solid formulation may contain a dye or colorant. Although a colorant may be used in a liquid formulation, to give an intense color in the toilet bowl a high concentration is required. This may lead to unsightly staining when delivering from a liquid product. By providing a solid colorant containing component, release of the dye id better controlled.
  • the blocks may contain dye, surfactant and a filler, similar in composition to the well known ‘BLOO’ (trade mark) blocks.
  • the refill comprises the combination of the liquid container and the solid cage provided as a single unit.
  • FIG. 1 is a front perspective view of a lavatory cleansing device forming a first embodiment of the invention
  • FIG. 2 is a rear perspective view of the device of FIG. 1;
  • FIG. 3 is a side view of the device of FIG. 1;
  • FIG. 4 is a cross-section along the line A-A of FIG. 3;
  • FIG. 5 is an enlarged detail of FIG. 5, on circle B;
  • FIG. 6 is an exploded view of the device of FIG. 1;
  • FIG. 7 is a perspective view on line C-C of FIG. 4;
  • FIG. 8 is a perspective view of a refill for the device of FIG. 1;
  • FIG. 9 is a perspective view of a second embodiment of the invention, in which two liquid compositions are dispensed;
  • FIG. 10 is a plan view of the delivery plate of FIG. 9;
  • FIG. 11 is a rear perspective view of a third embodiment of the invention.
  • FIG. 12 is a front view partly cut away of the embodiment of FIG. 11.
  • FIG. 13 is a side view of an embodiment of a modified tablet holder for the embodiment of FIGS. 1 to 8 ;
  • FIG. 14 is a perspective view from above of the holder of FIG. 13, and
  • FIG. 15 is a plan view of the tablet holder of FIG. 13.
  • FIG. 16 is a side view corresponding to FIG. 3 and showing a sloping delivery plate and the device mounted on a rim of a toilet bowl.
  • a lavatory cleansing device 2 comprises a main support member 4 which carries a container 6 containing a liquid formulation 5 (see FIG. 5) and a cage 8 which houses a solid formulation.
  • Container 6 and cage 8 are clipped together and are removable from the mains support member 4 .
  • the combination of container 6 and cage 8 form a refill, as seen in FIG. 8.
  • Support member 4 has a folded strap 10 on its rear wall 16 .
  • Strap 10 is unfolded and hooked over the rim of a toilet bowl, as is well known in the art. Strap portion 10 a will bear against the inner wall of the toilet rim (see FIG. 16).
  • a delivery plate 12 having a textile layer 14 on its upper surface, is attached to the underside of the support member 4 and extends to the rear of the rear wall 16 .
  • plate 12 will extend underneath the rim of the toilet bowl so that flush water will splash over the textile layer 14 .
  • Plate 12 may be configured to abut the side wall of the toilet bowl to ensure collection of sufficient water in the toilet bowls, particularly US style bowls, in which the flush water is directed to flow down the wall rather than cascade turbulently from the rim.
  • the lavatory cleansing device 2 incorporates, in effect, two delivery systems, a first for delivering a liquid product and a second for delivering components from a solid product, whilst keeping the products separate and allowing for a single refill unit.
  • Container 6 is typically molded of clear or semi-transparent PET or PVC High density polyethylene or polypropylene may be used if the container contains, or is contacted by a bleach component, for example.
  • Container 6 has an outlet opening 17 closed by a cap 18 which has a frangible seal 20 and a tubular collar 22 extending down below the seal 20 . Prior to fracture, seal 20 extends across the inner end 23 of collar 22 .
  • Delivery plate 12 molded of polypropylene has a cup 24 which depends downwardly from a main supporting surface 26 .
  • a spigot 28 projects up from the bottom wall 30 of the cup 24 .
  • the layer 14 of the textile material lays on the supporting surface 26 .
  • Textile material layer 14 may be glued or welded to surface 26 , for example by ultrasonic welding or held flat by spikes projecting up from surface 26 , for example.
  • Textile layer 14 has an aperture 38 which coincides with the mouth of cup 24 . Textile layer 14 need not fully surround cup 24 . The requirement is to deliver liquid from the cup to the exposed area of the plate 26 and textile layer 14 .
  • Main support member 4 has a capillary member 32 integrally formed on a bottom wall 36 of support member 4 .
  • Capillary member 32 extends through aperture 38 of textile layer 14 , into the cup 24 .
  • Capillary member 32 is cylindrical, and has capillary channels 40 formed in its outer wall, facing the inner wall 42 of cup 24 .
  • Capillary channels 40 extend up to the underside of bottom wall 36 , and along a thickened region of wall 36 , forming an L-shape which will overlap the textile layer 14 .
  • Capillary channels 40 are positioned to deliver liquid onto the textile layer 14 .
  • Delivery plate 12 with textile layer 14 in position, is clipped to support member 4 , for example by nibs 35 integrally formed on the walls of support member 4 , which clip under delivery plate 12 .
  • the container 6 is pushed into support member 4 , spigot 28 displacing the frangible seal 20 of cap 18 .
  • a ledge 39 formed in the wall of container 6 rests on the upper edge 41 of support 4 .
  • Ribs 43 on the inside surface of support 4 engages in recesses 45 in the container wall.
  • Liquid 5 will flow from the container 6 into cup 24 , through collar 22 .
  • Liquid from cup 24 is ducted up onto the upper surface 44 of textile layer 14 by the capillary channels 40 .
  • Capillary channels 40 co-operate with the inner wall 42 of cup 24 to duct the liquid upwards, until it passes into the upper leg 46 of capillary channels 40 , which extend over the fabric upper surface 44 .
  • the liquid is then ducted away from the capillary channels 40 by the texture of the textile, to spread slowly over the surface 44 . It is preferred that there is no substantial absorption into the textile layer, thus a hydrophobic treatment may be preferred.
  • the presently preferred material is a Jacquard knitted polyester of open weave, having Motions A B Front Bar Cut Cut Back Bar Cut Miss
  • This arrangement is particularly suited for use with viscous liquids.
  • the textile layer 14 may be dispensed with, and the upper surface 26 of plate 12 may be textured, for example with radial grooves, to duct liquid over the surface.
  • the liquid from container 6 will fill the cup 24 only to just above the lower edge 47 of the collar 22 .
  • the level of liquid in cup 24 falls below the edge 46 , allowing air to enter container 6 , and so allowing more liquid to flow from the container into cup 24 until edge 46 is covered again.
  • Container cap 18 fits in a cylinder 49 extending up from the wall 36 , Grooves 51 are provided on the inside of the wall of cylinder 49 to allow air to enter cup 24 .
  • Wall 36 sits just clear of textile layer 14 to allow liquid 5 to flow out over the surface of the textile. It has been found that the spacing of the wall 36 from the supporting surface 26 , and hence the degree of compression, if any, of the textile 14 affects the rate of delivery of the product from the well or cup 24 . Hence some trial is required to optimise the spacing to suit the particular textile, liquid viscosity, etc.
  • the liquid viscosity, capillary channel size, fabric surface, etc. are tailored to replenish the surface 44 with a fresh dosage of liquid within 30 seconds to 10 minutes after the toilet bowl has been flushed.
  • the other component of the cleaning device 2 is a solid tablet 50 of bleaching agent. Tabletted bleaching agents are well known.
  • Tablet 50 is held in cage 8 which fits in support member 4 , under container 6 .
  • Cage 8 is molded of polypropylene and forms a cylindrical cup 52 in which tablet 14 sits. Front and rear walls 54 , 55 extend up from the cup 52 to embrace the container 6 .
  • Cage 8 is configured to receive a small amount of flush water which percolates around tablet 50 to dissolve the bleach component and then drips into the toilet bowl. It is desirable to separate the bleach component from the liquid component of container 6 until they mix in the toilet bowl. Thus, flush water exits cage 8 at an aperture 56 in the bottom wall 58 of cup 52 as seen most clearly in FIG. 7.
  • an aperture 59 is formed in the rear wall 16 of support member 4 , level with the textile layer 14 on the delivery plate 12 .
  • a corresponding aperture 60 in cylindrical cup 52 is aligned with aperture 59 .
  • Flush water flowing onto the textile layer 14 will splash through apertures 59 , 60 and on to tablet 50 .
  • the water will then flow down and out through aperture 56 .
  • Tablet 50 is supported on ribs 61 , to support the tablet over the conical bottom wall 58 of cup 52 .
  • Bottom wall 58 is aligned with an aperture 62 in delivery plate 12 .
  • the textile layer 14 is fixed to delivery plate 12 , which is then snapped in place on the underside of the supporting member 4 .
  • the cage 8 with a bleach tablet 50 in place is snapped onto the container 6 , which is filled with liquid surfactant mixture and closed by cap 18 .
  • the consumer pushes the container/cage unit into the supporting member 4 .
  • Spigot 28 displaces seal 20 , so that liquid fills cup 24 and is ducted onto the surface 44 of textile layer 14 as described above.
  • the unit is suspended at the rim of a toilet bowl, plate 12 extending into the flow of flush water.
  • the flush water When the toilet is flushed, the flush water rapidly washes liquid 5 from the surface of the textile layer 14 . Water will also pass through apertures 59 , 60 to flow over bleach tablet 50 and wash bleach components out through aperture 56 . Although the flush water may carry some of the surfactant formulation 5 over the bleach tablet 50 , this will be washed out through aperture 56 and so there will not be prolonged contact in cup 52 . In any event, any discoloration at tablet 50 , for example, would not be visible to the user.
  • Plate 12 may be partitioned at line 63 of FIG. 6, or the fabric layer stopped short of the apertures 59 for example at line 64 of FIG. 6.
  • tablet 50 may be in the form of a paste or gel, granules, etc. If desired, the tablet 50 may also be replaceable separately to the container 6 .
  • a preferred formulation is % by Weight Anionic Surfactant 26.5 Nonionic Surfactant 5.0 Solvents 10.0 Antioxidant 0.004 Perfume 10.0 Dye 0.0024 Preservative 0.1 Natrosol Cellulose Thickener 0.4* Water Balance
  • the amount of natrosol is varied to achieve the desired viscosity, which typically is in the range 350 to 5000 centipoise, preferably 2000 to 4000, measured in a Broomfield LV viscosimeter, 20° C., spindle 2, speed 6.
  • Bleach tablet formulations are also well known in the art, and a typical formulation would include Sodium dichloroisocyanurate or trichlorocyanuric acid The latter is available from Arch Chemicals Ltd. Under the trade mark Fi-Tabs.
  • a solid tablet of an acidic material for limescale removal or inhibition may be utilised, and a typical formulation would incorporate 90% by weight of citric acid.
  • the bleach (or acid) component may be presented as a liquid formulation, and delivered from container 6 .
  • a typical liquid bleach formulation would be % by Weight Sodium hypochlorite 4.5 Sodium hydroxide 0.8 Myristyl amine oxide 10.0 Sodium Xylene Sulphonate 0.75 Water Balance
  • the material of the container 6 would be bleach resistant.
  • a bleach resistant colorant or dye may be incorporated in the liquid bleach formulation so that a user can readily tell when the container is empty.
  • an acid formulation would be 10% hydrochloric acid, Tallow Ammonium Chloride type 1.5%, Alcohol Ethoxylate (non-ionic) 1.5%, dye, perfume and balance water to give a viscosity of about 500 Cps.
  • the bleach or acid component is formulated as a liquid
  • the surfactant/perfume/dye component may be formulated as a solid, using formulations well known in the art for solid rim sticks, comprising surfactant, solubility control agent (hydrophobe), perfume, colorant, electrolyte filler, etc.
  • FIG. 9 delivers two liquid compositions and is similar in construction to the liquid rim device seen in WO 00/42261 save that it delivers two liquid compositions, whilst maintaining them separate.
  • a support member 70 is shown with part of its rear wall 72 removed for clarity, and also the strap which is used to suspend the holder from the toilet bowl rim.
  • a bottom wall 74 of the support member 70 is divided into two separate parts 74 a , 74 b , separated by a gap 76 .
  • a cylinder or collar 78 extends up from each bottom wall portion 74 a , 74 b , an aperture being provided in each wall portion 74 a , 74 b , within the area bound by the cylinder 78 .
  • a delivery plate 80 is clipped to the underside of the wall 74 .
  • plate 80 has a spigot 82 positioned to project up through the respective aperture in the wall 74 .
  • a central dividing wall 84 divides the upper surface 86 of plate 80 into separate halves.
  • a series of grooves or channels 87 extend away from the spigots 82 .
  • a liquid container 90 which is generally transparent or translucent, has two separate compartments 92 , 94 , divided by a wall 96 . It will be appreciated that container 90 may be formed as two separate members which are bonded together, or otherwise shaped to facilitate manufacture.
  • the device unctions generally as described in WO 00/42261 save that different liquid compositions are delivered onto the different delivery surfaces 86 a , 86 b , and are kept separated by the wall 84 , until they are washed into the toilet cistern.
  • the liquid compositions may be formulated as described above in relation to the first embodiment. Also, it will be appreciated that the liquid delivery systems may be as described in the first embodiment, using a cup below the delivery surface and a capillary system to deliver liquid onto the delivery surface, which could be a textile layer.
  • the support member itself forms a cage for holding small tablets or pellets of a solid bleach formulation.
  • FIG. 11 The drawings show a liquid dispensing device 110 similar in construction to the device seen in WO 00 / 42261 .
  • a container 112 of translucent polypropylene contains a liquid surfactant/dye/perfume mixture 113 .
  • Container 112 is held in a support member 114 which is clipped onto the rim of a toilet bowl by means of a flexible strap 116 which is integral with a rear wall 118 of the support member.
  • Container 112 has an outlet 120 which is temporarily closed by a cap 122 .
  • Cap 122 has a frangible seal 124 which, as seen in FIG. 8, is displaced by a spigot 125 when the container 112 is inserted in the support member 110 .
  • the remaining portion of cap 122 serves to form a seal between the outlet 120 and a cylindrical collar 128 .
  • Collar 128 defines an opening 130 in a bottom wall 132 of the support member 110 . Liquid from container 112 flows through outlet 120 onto a delivery plate 134 which is clipped in place under wall 132 . Spigot 125 projects up from plate 134 , Grooves 136 extend away from the spigot 124 to duct liquid onto the exposed surface of plate 132 , as described in the embodiment of FIGS. 9 and 10. Thus far, the arrangement is similar to that described in WO 00/42261.
  • the container 112 has sloping shoulders 138 to form a space 139 in the support member 114 which is bound by the shoulders 138 , rear wall 118 , front wall 140 and side walls 142 .
  • Pellets 144 of a bleaching composition are housed in the space 139 .
  • FIGS. 13 to 15 show a modified tablet holder for the embodiment of FIGS. 1 to 8 .
  • This tablet holder is arranged to hold the flush water, which enters the holder, in contact with the tablet for a short period of time prior to releasing it into the toilet bowl.
  • the flush water will take components of the bleach block (or other block type in the holder) into solution in a more controlled manner. Also, by delaying the drainage of the formed solution into the toilet bowl, the constituents are less likely to be carried out of the bowl with the flushing water.
  • the plate 12 is sloped downwards towards the entry aperture 59 , 60 , preferably at an angle of about 10 to 20 degrees to the horizontal, and preferably about 15 degrees, as seen in FIG. 16.
  • the horizontal may be taken as the perpendicular to the main strap portion 10 a (FIGS. 1 and 2). It will be appreciated that the actual angle of the plate 12 to the horizontal will depend on the orientation adapted by the device when installed by the user on the toilet bowl rim 154 and this itself may also vary between bowl designs.
  • FIG. 13 shows a perspective view of the tablet holder 8 ′ from the rear side (i.e. the side of the delivery plate 12 when installed) cf. the view in FIG. 6.
  • Inlet aperture 60 ′ aligns with the upper surface of the plate 12 or fabric layer 24 and aperture 59 in the rear wall of the holder 4 (see FIG. 6).
  • Aperture 60 ′ is dimensioned to allow the tablet holder 8 ′ to fill to about the level of the aperture 60 ′ during a flushing cycle. Water filling the tablet holder 8 ′ eventually drains from the tablet holder through outlet aperture 56 ′ in the bottom wall 58 .
  • the outlet aperture is about 1.3 mm across, typically starting to drain a few seconds after the flush has stopped, and continuing to drain for several minutes, preferably ten minutes or more after the flush.
  • Outlet aperture 56 ′ will be smaller than inlet aperture 60 ′.
  • the quantity of water in tablet holder 8 ′ will depend on the amount of tablet left, but a quantity in the region of 5 cm 3 is preferred.
  • bottom wall 58 is dished, sloping down to the outlet aperture 56 ′, and a tablet 8 , is supported on radial ribs 61 .
  • a plurality of pins extend up from the bottom wall 58 and the tablet is located between the pins 150 . This ensures that the tablet is held clear of the inlet and outlet apertures 60 ′, 56 , to avoid blocking them, and water can access the side and underneath of the tablet.
  • a shield plate 52 further protects the outlet aperture 56 ′ to prevent tablet particles blocking the aperture.
  • Nibs 156 engage in recesses in the sidewalls of container 6 to clip the cage 8 to the container, to form a refill unit.
  • Typical formulations for a bleach tablet are given in table 1.

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  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Hydrology & Water Resources (AREA)
  • Water Supply & Treatment (AREA)
  • Bidet-Like Cleaning Device And Other Flush Toilet Accessories (AREA)
  • Detergent Compositions (AREA)
  • Apparatus For Disinfection Or Sterilisation (AREA)
US10/073,539 2001-02-09 2002-02-11 Lavatory cleansing devices Abandoned US20020148036A1 (en)

Priority Applications (1)

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US10/835,988 US7234175B2 (en) 2001-02-09 2004-04-30 Lavatory cleansing devices

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GB0103283A GB2372046A (en) 2001-02-09 2001-02-09 Liquid dispensing unit for a toilet bowl
GB0103283.8 2001-02-09

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US10/835,988 Expired - Fee Related US7234175B2 (en) 2001-02-09 2004-04-30 Lavatory cleansing devices

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US (2) US20020148036A1 (pt)
EP (1) EP1366244B1 (pt)
JP (1) JP4025202B2 (pt)
AT (1) ATE343021T1 (pt)
BR (1) BR0207496B1 (pt)
CA (1) CA2440340A1 (pt)
DE (1) DE60215465T2 (pt)
GB (1) GB2372046A (pt)
MX (1) MXPA03007159A (pt)
WO (1) WO2002064898A1 (pt)
ZA (1) ZA200307035B (pt)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6662380B1 (en) 2002-08-29 2003-12-16 S.C. Johnson & Son, Inc. Dual action toilet rim mounted toilet bowl cleaner
US20040109799A1 (en) * 2002-12-10 2004-06-10 Ecolab Inc. Deodorizing and sanitizing employing a wicking device
US20040154989A1 (en) * 2003-02-10 2004-08-12 Kiyoharu Hamasaki Agent for restricting elution of phosphorus, method for producing the same, and method of restricting elution of phosphorus in sludge
WO2004072390A1 (en) * 2003-02-17 2004-08-26 Re.Le.Vi.-S.P.A. Multiple liquid active substance dispenser for w.c. bowl
EP1469131A1 (en) * 2003-04-15 2004-10-20 The Procter & Gamble Company A lavatory bowl rim-block providing a combination of ongoing perfume delivery with a perfume boost upon flushing
EP1473357A1 (en) * 2003-04-29 2004-11-03 The Procter & Gamble Company A lavatory bowl rim-block
EP1473356A1 (en) * 2003-04-29 2004-11-03 The Procter & Gamble Company A lavatory bowl rim-block
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EP1473357A1 (en) * 2003-04-29 2004-11-03 The Procter & Gamble Company A lavatory bowl rim-block
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WO2006090184A1 (en) * 2005-02-28 2006-08-31 Jeyes Group Limited Dispenser for releasing treatment composition into a toilet bowl
US20100235976A1 (en) * 2005-02-28 2010-09-23 Jeyes Group Limited Dispenser for Releasing Treatment Composition Into a Toilet Bowl
US20080092282A1 (en) * 2006-10-13 2008-04-24 Florian Altmann Unit-dose dispenser
US10669705B2 (en) 2016-07-05 2020-06-02 Willert Home Products, Inc. Toilet bowl treatment apparatus and method of making same
CN113026881A (zh) * 2021-04-07 2021-06-25 深圳市玉润泉化妆品有限公司 一种自动定量添加洁厕块的清洁型坐便器

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BR0207496A (pt) 2004-03-09
ATE343021T1 (de) 2006-11-15
GB0103283D0 (en) 2001-03-28
US20040199985A1 (en) 2004-10-14
US7234175B2 (en) 2007-06-26
JP2004520507A (ja) 2004-07-08
DE60215465D1 (de) 2006-11-30
WO2002064898A1 (en) 2002-08-22
EP1366244B1 (en) 2006-10-18
JP4025202B2 (ja) 2007-12-19
MXPA03007159A (es) 2004-10-15
ZA200307035B (en) 2004-07-20
CA2440340A1 (en) 2002-08-22
DE60215465T2 (de) 2007-08-30
BR0207496B1 (pt) 2014-10-14
GB2372046A (en) 2002-08-14

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